Improvement in machines for the manufacture of roofing



D. HITCHCOCK & W. GIBBS.

improvement in Machines for the Manufacture of Roofing. N0. 114,139,'Patented Aprii25,1871.

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DWIGHT HITOHOOOK AND WILLIS GIBBS, OF SYRACUSE, YORK,

ASSIGNORS TO OLIVER T. BURT. 0F SAME PLACE.

Letters Patent No. 114,139, dated April 25, 1871.

lMPRQVEMENT IN MACHINES FOR THE MANUFACTURE OF ROOFING.

The Schedule referred to in theseLettei-s Patent. and making part of thesame- To all whom it may concern.-

to 'the accompanying drawing forming part of this specification, inwhich- I Figure 1 is a sectional side view of the machine.

Figure 2 is a plan or top view of the carriage or frame for supportingthe tray.

Figure 3 is top view of the tray.

Figure 4 is an end view of the box or hopper ror holding anddistributing the compound.

Figure 5 is an end view of the carriage and tray togather.

Figure 6 is a longitudinal vertical section of the hopper.

Similar letters of reference indicate like parts in the several figures.

A series of grooved rollers, A, fig. 1, are mounted in pairs on a tableor frame-work, B b, to form an antifriction bed for the hand-frame orcarriage to travel on.

Over the table B l) is mounted a felt-roller, C, and a heavypressing-roller, D, of iron, which is suspended in boxes in such manneras to have aslight vertical play.'

A hopper, E, for the tar compound, is also placed above the said tableB.

A number of trays, F, fig. 3, is provided, and a handcarriage or frame,G, fig. 2.

A tray, F, is covered with a thin bed of sand and then placed on thecarriage Gr, and it is then placed on the table B, and after the end ofthe felt has been attached to the front end of the carriage, one of theoperators pushes the carriage over the table, while a second operatorattends to the distributing-valve of 'the hopper.

As the carriage is pushediforward the hopper E covers the sand in thetray F with a coating of the tar or compound, and-the felt is drawn fromits roller 0, and, passing over the pressing-roller and under it, ispressed down firmly and evenly onto the compound as the carriageadvances.

cold, and in thismauner no time is lost oy waiting for the roofing tocool after it comes from the rollers.

Heretofore the tray F and carriage G have been made in one piece, but wemake them separate, as shown in figs. 2' and '3, so that but onecarriage or frame G is necessary for a large number of trays.

In making the carriage G we get the required stiffness with the leastweight by inserting wide strips of iron g g in'the side pieces of theframe. These strips run the whole length of the carriage, and are placedvertically, as shown in end view, iig. 5 and the whole being wellsecured, they prevent all springing of the carriage.

The lower edges of these iron strips 9 g form ribs below the carriage,which travel ,in the grooved rollers to guide the carriage over thetable, and the upper edges can be sharpened, so that the pressure--roller D will by its weight shear off the edges of the felt on thesesharpened edges; but said edges can beused blunt or sharpened, asdesired.

The hopper E has a valve, e, fig. 1, that works on a pivot, and isoperated by a hand-lever, I. This lever is made of spring metal, andworks against a fixed cross-bar, i, fig. 6, with sufiicient pressure andfriction to hold the valve in any position in which it is set, and bythis means the valverequires less attention and the operator can leaveit momentarily when it is discharging. v

The hopper has a shelf, h, fig. 1, on the outside near its discharge, onwhich heated bricks or pieces of iron are placed, to keep the compoundlimpid or soft, so as to not drag and make the surface rough andirregular as the carriage takes it from the mouth of the hopper. Asthese bricks become cooled they are removed and hot ones from the firesubstituted.

The bottom of the hopper is also provided with two guards, at m, thatprevent the compound from flooding over at the sides of the tray.

These guards are attached to the ends of the hopper by set-screws n a,fig. 6, passing through slots in such manner that the guards can beadjusted vertically.

This machine is also used for making composition slabs for coveringcellar floors or for covering sidewalks. In making these slabs thehopper is set higher so as to give greater thickness to the manufacturedsheets. The hopper is held by set-screws o 0, fig. 4, which occupy slotsin the side pieces of the hopper, so that its height can'be readilyregulated, as desired.

When making said slabs the ribs or side flanges ff of the trays F areremoved, and the granadizing can be applied to the top of the compoundby letting the sand run from a second hopper.

Having thus described our invention,

That We claim. and desire to secure by Letters Palt nt, is 7 1. The handcurriage G,made-with flat strengthenng-pieces g g of metal, arrangedvertically, as shown, 0 prevent springing, and projecting below thecamiage to act as guide-ribs, and projecting above to not us guards, andknives, if desired, in connection with ,he table'B A, pressure-roller D,and hopper E, as Mild for the purpose described.

2. In connection withthe table B, roller 1), and hop )61 E, the carriageG, madewith a detachable bottom )r tray, F, as and for the purposeherein described.

3. The hopper E, constructed with a shelf, h, at its iischarge, forheating purposes, in connection with a vsuitablecarriagegtnd'taibie :forrunning off the aisphah Witnesses:

E. H. 'Scownnn, F.,A. MO LEY.

